Unit 3 8th Grade Waves

What is kinetic energy?

• A) Energy due to position

• B) Energy due to motion

• C) Energy stored in chemical bonds

• D) Energy due to electric field.

Potential energy is the energy due to interaction between objects or particles when distance changes. Which of the following is NOT a type of potential energy?

• A) Elastic

• B) Gravitational

• C) Thermal

• D) Chemical

Fill in the blank: The amount of potential energy an object has depends on the _______ of objects or their particles.

• speed

• position

• color

• temperature

What is a wave?

• A disturbance that transfers energy without transferring matter

• A solid object that moves energy

• A type of sound

• A form of light.

Mechanical waves must have a ______ to travel through.

• medium

• vacuum

• light

• sound

What is required for a mechanical wave to travel?

• A vacuum

• A medium

• A solid surface

• An electric field

A transverse wave is one where the energy moves ________ to the disturbance.

• A) parallel

• B) perpendicular

• C) in a circular motion

• D) randomly

What is the amplitude of a wave?

• The speed of the wave

• The maximum distance the wave moves from its resting position

• The frequency of the wave

• The wavelength of the wave.

The unit for describing the intensity of sound is the ______.

• Hertz

• Decibel

• Newton

• Joule

What is the SI unit for frequency?

• Meter

• Hertz

• Second

• Newton